Api 653 Closed Book Exam Questions (100 Terms) With Verified Definitions Updated 2024

Two of the best tools for visually inspecting inside a tank for cracks is a: a. "Tank buggy" and a hammer. b. UT meter and hammer. c. Pit gage and a rule. d. Strong light and a magnifying glass. {Ans: Strong light and a magnifying glass}Atmospheric pressure when used to describe the design pressure of a tank refers to internal pressure up to but not exceeding: a. 2.5 ounces per in2 gage. b. 2.5 pounds per ft2 gage. c. 2.5 grams per cm2 gage. d. 2.5 pounds per in2 gage. {Ans: 2.5 pounds per in2 gage.}Rim-mounted primary and toroidal seal systems can be removed, repaired, or replaced. To minimize evaporation losses and reduce potential hazards to workers, no more than: a. 1/3 of the roof seal system should be out of an in-service tank at one time. b. 1/4 of the roof seal system should be out of an in-service tank at one time. c. 1/2 of the roof seal system should be out of an in-service tank at one time. d. 1/5 of the roof seal system should be out of an in-service tank at one time. {Ans: 1/4 of the roof seal system should be